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arXiv 1501.03494hep-ph
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用轻夸克模型解释CMS $\ell^+\ell^- jj E\!\!\!\!/_{\rm T}$过剩

Interpreting the CMS $\ell^+\ell^- jj E\!\!\!\!/_{\rm T}$ Excess with a Leptoquark Model

Ben Allanach, Alexandre Alves, Farinaldo S. Queiroz, Kuver Sinha, Alessandro Strumia

摘要:

受CMS合作组在8 TeV LHC数据中观测到的$ee jj$和$eνjj$通道中的过剩激发,文献中提出了一个质量约为500 GeV的轻夸克模型。为了重现所声称的事件率,人们假设细夸克有一个显著的部分分支比,进入一个额外的扇区,被认为是暗物质,而不是典型的$ej$。我们在这里证明了,在$\ell^+\ell^- jj E\!\!\!\!/_{\rm T}$中,轻夸克衰变到暗物质的通道可以满足CMS所声称的另一个过剩:事件率、双轻子不变质量分布和快度范围与数据是一致的。我们提供的14 TeV LHC即将运行II的预测和讨论方面的暗物质检测。

英文摘要:

Motivated by excesses in $ee jj$ and $eνjj$ channels observed by the CMS collaboration, in 8 TeV LHC data, a model of lepto-quarks with mass around 500 GeV was proposed in the literature. In order to reproduce the claimed event rate, lepto-quarks were assumed to have a significant partial branching ratio into an extra sector, taken to be Dark Matter, other than the canonical $ej$. We here show that the decay channel of lepto-quark into Dark Matter can fit another excess claimed by CMS, in $\ell^+\ell^- jj E\!\!\!\!/_{\rm T}$: the event rate, the distribution in di-lepton invariant mass and the rapidity range are compatible with the data. We provide predictions for the forthcoming Run II of the 14 TeV LHC and discuss aspects of dark matter detection.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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